211231232 has 20 divisors (see below), whose sum is σ = 422050926. Its totient is φ = 105615360.

The previous prime is 211231219. The next prime is 211231271. The reversal of 211231232 is 232132112.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 66846976 = 12016^2 + 8176^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 211231232.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205769 + ... + 206792.

Almost surely, 2^211231232 is an apocalyptic number.

It is an amenable number.

211231232 is a deficient number, since it is larger than the sum of its proper divisors (210819694).

211231232 is an frugal number, since it uses more digits than its factorization.

211231232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412579 (or 412563 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 211231232 is about 14533.7962005802. The cubic root of 211231232 is about 595.5515747694.

Adding to 211231232 its reverse (232132112), we get a palindrome (443363344).

The spelling of 211231232 in words is "two hundred eleven million, two hundred thirty-one thousand, two hundred thirty-two".